\subsection{Logging options}

\subsubsection{\texttt{--log <logfile>}}
Specifies an alternate file for logging output.

\subsubsection{\texttt{--debug[:<debug\_log>]}}
Specifies a file for logging the debugging output.If no file
specified, debug output is printed to the log file.

\subsubsection{\texttt{(-V|--verbose) <$\{1|2|3|4|5$\}>}}
Sets the verbosity level:
1 prints only errors, 
2 warnings, 
3 normal, 
4 log to stdout. 
5 prints debug information. 
(default: 3)

\subsubsection{\texttt{--append\_log }}
Append to the logfile instead of replacing it.
